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Estimating the magnetic field of an exoplanetScientists developed a new method which allows to estimate the magnetic field of a distant exoplanet, i.e., a planet, which is located outside the Solar system and orbits a different star. Moreover, they managed to estimate the value of the magnetic moment of the planet HD 209458b.The group of scientists including one of the researchers of the Lomonosov State University published their article in the Science magazine.http://phys.org/news335713424.html
Astronomy & SpaceThu, 20 Nov 2014 14:00:08 ESTnews335713424Bush-era memos: president can wiretap Americans at all timesThe US Justice Department has released two memos detailing the Bush administration's legal justification for monitoring the phone calls and emails of Americans without a warrant.http://phys.org/news329218033.html
TechnologySat, 06 Sep 2014 10:27:21 ESTnews329218033Out of an hours-long explosion, a stand-in for the first starsAstronomers analyzing a long-lasting blast of high-energy light observed in 2013 report finding features strikingly similar to those expected from an explosion from the universe's earliest stars. If this interpretation is correct, the outburst validates ideas about a recently identified class of gamma-ray burst and serves as a stand-in for what future observatories may see as the last acts of the first stars.http://phys.org/news324312919.html
Astronomy & SpaceFri, 11 Jul 2014 15:55:34 ESTnews324312919Red dwarf planets face hostile space weather within habitable zoneRed dwarfs comprise about 80 percent of the stars in the Universe, but their habitable zone—the distance from a star where liquid water may pool on the surface of the planet—is far more hostile than scientists have hoped.http://phys.org/news321802626.html
Astronomy & SpaceThu, 12 Jun 2014 15:00:04 ESTnews321802626New study reveals that stellar winds scatter star-forming material (w/ Video)(Phys.org) —A University of Alberta astrophysicist's 3-D computer animation is helping an international research team get an unprecedented look at star-forming gases escaping from a nearby galaxy.http://phys.org/news296115085.html
Astronomy & SpaceMon, 19 Aug 2013 07:11:51 ESTnews296115085Stellar winds may electrify exoplanets(Phys.org) —The strangest class of exoplanets found to date might be even stranger than astronomers have thought. A new model suggests that they are partially heated by electric currents linked to their host stars. Florida Gulf Coast University (FGCU) astronomer Dr. Derek Buzasi has proposed a model in which electric currents arising from the interaction between the planet's magnetic field and the hot charged wind from the star flow through the interior of the planet, heating it like an electric toaster.http://phys.org/news289640640.html
Astronomy & SpaceWed, 05 Jun 2013 08:44:25 ESTnews289640640Detection of titanium oxide and titanium dioxide around the giant star VY Canis Majoris(Phys.org) —An international team of astronomers, including researchers from the Max Planck Institute for Radio Astronomy and from the University of Cologne, discovered two titanium oxides, TiO and TiO2, at radio wavelengths using telescope arrays in the USA and in France. The detection was made in the environment of VY Canis Majoris, a giant star close to the end of its life.http://phys.org/news283594348.html
Astronomy & SpaceWed, 27 Mar 2013 09:12:44 ESTnews283594348The Bubble Nebula, observed with the new One Degree Imager Camera(Phys.org)—Just in time for the holidays, a spectacular image of the Bubble Nebula (NGC 7635) demonstrates the potential of the new camera known as the One Degree Imager, or ODI, that is being commissioned at the WIYN 3.5-meter telescope on Kitt Peak. The Bubble Nebula is a shell of gas and dust carved out by the stellar wind of the massive central star (BD+60 2522), and ionized by the same star's high-energy light. Located in the constellation Cassiopeia, this nebula is about 10 light-years across.http://phys.org/news274037539.html
Astronomy & SpaceThu, 06 Dec 2012 17:33:58 ESTnews274037539Abell 30: X-rays from a Reborn Planetary Nebula(Phys.org)—These images of the planetary nebula Abell 30, (a.k.a. A30), show one of the clearest views ever obtained of a special phase of evolution for these objects. The inset image on the right is a close-up view of A30 showing X-ray data from NASA's Chandra X-ray Observatory in purple and Hubble Space Telescope (HST) data showing optical emission from oxygen ions in orange. On the left is a larger view showing optical and X-ray data from the Kitt Peak National Observatory and ESA's XMM-Newton, respectively. In this image the optical data show emission from oxygen (orange) and hydrogen (green and blue), and X-ray emission is colored purple.http://phys.org/news272204105.html
Astronomy & SpaceThu, 15 Nov 2012 12:15:18 ESTnews272204105Fire burn and cauldron bubble in Canis MajorThe cosmic cauldron has brewed up a Halloween trick in the form of a ghostly face that glows in X-rays, as seen by ESA's XMM-Newton space telescope. The eerie entity is a bubble bursting with the fiery stellar wind of a 'live fast, die young' star.http://phys.org/news270806435.html
Astronomy & SpaceTue, 30 Oct 2012 09:01:28 ESTnews270806435The magnetic wakes of pulsar planetsPulsars are among the most extreme stars in the universe: dense balls of matter which are heavier than the Sun, yet only a few tens of kilometers in diameter. They rotate rapidly (up to several hundred revolutions per second) and flash like lighthouse beacons—hence the name, which is short for pulsating star. And yet despite these exotic properties, pulsars are like our Sun in one way at least: two have been observed to be home to planetary systems. http://phys.org/news268903489.html
Astronomy & SpaceMon, 08 Oct 2012 08:24:58 ESTnews268903489Astronomers watch instant replay of powerful stellar eruptionAstronomers are watching the astronomical equivalent of an instant replay of a spectacular outburst from the unstable, behemoth double-star system Eta Carinae, which was initially seen on Earth nearly 170 years ago. Astrophysicists affiliated with UC Santa Barbara and Las Cumbres Observatory Global Telescope Network (LCOGT) contributed to the study.http://phys.org/news248527142.html
Astronomy & SpaceWed, 15 Feb 2012 13:00:01 ESTnews248527142Star formation lawsTake a cloud of molecular hydrogen add some turbulence and you get star formation &#150; that&#146;s the law. The efficiency of star formation (how big and how populous they get) is largely a function of the density of the initial cloud.http://phys.org/news236266179.html
Astronomy & SpaceMon, 26 Sep 2011 14:29:47 ESTnews236266179Hubble finds that puny stars pack a big punch(PhysOrg.com) -- A deep survey of more than 200,000 stars in our Milky Way galaxy has unveiled the sometimes petulant behavior of tiny red dwarf stars. These stars, which are smaller than the Sun, can unleash powerful eruptions called flares that may release the energy of more than 100 million atomic bombs.http://phys.org/news213907222.html
Astronomy & SpaceMon, 10 Jan 2011 18:40:49 ESTnews213907222Recipe for water: Just add starlightESA's (European Space Agency) Herschel infrared space observatory has discovered that ultraviolet starlight is a key ingredient for making water in the atmosphere of some stars. It is the only explanation for why a dying star is surrounded by a gigantic cloud of hot water vapour. These new results will be published tomorrow in Nature.http://phys.org/news202577650.html
Astronomy & SpaceWed, 01 Sep 2010 16:36:07 ESTnews202577650Hubble's Festive View of a Grand Star-Forming Region (w/ Video)(PhysOrg.com) -- Just in time for the holidays: a Hubble Space Telescope picture postcard of hundreds of brilliant blue stars wreathed by warm, glowing clouds. The festive portrait is the most detailed view of the largest stellar nursery in our local galactic neighborhood. http://phys.org/news180118620.html
Astronomy & SpaceTue, 15 Dec 2009 17:10:02 ESTnews180118620Maps Unveil the Source of Starburst Galaxy's Winds(PhysOrg.com) -- A research group at Kyoto University has discovered that shocks are the primary energy sources that excite the galactic wind region of starburst galaxy NGC 253. Their images of the center of this galaxy, bright with intense star formation, have generated findings that substantially increase our meager knowledge of the physical properties of galactic winds and move us closer to understanding galaxy evolution.http://phys.org/news177783331.html
Astronomy & SpaceWed, 18 Nov 2009 19:20:03 ESTnews177783331Cygnus X-1: Still a 'Star' After All Those YearsSince its discovery 45 years ago, Cygnus X-1 has been one of the most intensively studied cosmic X-ray sources. About a decade after its discovery, Cygnus X-1 secured a place in the history of astronomy when a combination of X-ray and optical observations led to the conclusion that it was a black hole, the first such identification.http://phys.org/news170689138.html
Astronomy & SpaceFri, 28 Aug 2009 14:39:44 ESTnews170689138Particles as tracers for the most massive explosions in the Milky WayAstronomers recently observed a mysterious flux of particles in the universe, and the hope was born that this may be the first observation of the remnants of "dark matter". But scientists from the University of Gothenburg, Sweden, have shown that there is another explanation of the flux.http://phys.org/news169212050.html
Astronomy & SpaceTue, 11 Aug 2009 12:50:03 ESTnews169212050